Report on raw data for dataset: catch_iccat_level0

IRDMARBEC
bastien.grasset@ird.fr

IRDMARBEC

Abstract

This document aims to identify and present key issues related to the raw data used in the analysis. It highlights inconsistencies, gaps, or ambiguities in the data structure, content, or processing steps that may impact the reliability and comparability of the results. By systematically addressing these issues, this report seeks to provide clarity on the challenges inherent in the raw data and to propose areas where further refinement, validation, or clarification is needed. The ultimate goal is to ensure a solid foundation for subsequent analyses and to support informed decision-making regarding data preparation and use.

1 Overview of data located on land

Only the squares where the integrity of the area is located on land are considered in the analysis. The analysis has been perform using the cwp grid dataset that can be found : https://github.com/fdiwg/fdi-codelists/raw/main/global/cwp/cl_areal_grid.zip

More details : https://www.fao.org/cwp-on-fishery-statistics/handbook/general-concepts/main-water-areas/fr/#c737133

1.1 Time coverage

Figure 1.1: Evolutions of values for the dimension time-start for areas-in-land dataset

1.2 Spatial coverage

We represent spatial coverage, faceted by geographical category. The geographical category depends on the area of the geographic polygon. In this case there are 2 categories which are 1deg_x_1deg ; 5deg_x_5deg.

Figure 1.2: Distribution in value for the unit: Tons

Figure 1.3: Distribution in value for the unit: Number of fish

1.3 Coverage for other dimensions

We check the distribution of the value of each dimension and each unit.

Figure 1.4: Other dimensions

2 Annexe

Overview of the data provided for which the captures are in land corresponding to CWP standards. This dataset is 2053 rows and 42542.42286 tons and 5323.7 number of fish.

Figure 2.1: Data with known issues